TY - JOUR
T1 - Experimental and numerical investigation on the fatigue behaviour of friction stirred channel plates
AU - Vidal, Catarina
AU - Baptista, Ricardo
AU - Infante, Virgínia
N1 - info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F62963%2F2009/PT#
The authors would like to acknowledge the Portuguese Foundation for the Science and Technology (FCT) for its financial support through the PhD scholarship FCT SFRH/BD/62963/2009 , IDMEC , under LAETA project UID/EMS/50022/2019 and project UID/EMS/00667/2019 .
PY - 2019/9/1
Y1 - 2019/9/1
N2 - The friction stir channelling (FSC)process is a technological innovation based on the friction stir fundamentals. To produce friction stirred channel components, a non-consumable tool, similar to that used for friction stir welding (FSW), is used. Friction stir channelling is a single step manufacturing process in which a continuous channel with a specific path is produced in a monolithic metal component. This work discusses the influence of the channel geometry on the bending strength of friction stirred channel aluminium alloy specimens, as well as their fatigue behaviour. Moreover, fatigue analyses using the finite element method were also carried out, considering the channels' geometrical features in order to assess and compare the fatigue lives. The stress intensity factor for different crack lengths was determined using ABAQUS. The fatigue crack growth curve was established according to the Paris Law, and the crack was only allowed to propagate along the materials interface. It was observed that the critical zones are located in the vicinity of the channel corners and found that the fatigue crack propagation period on FSC specimens is very short compared to the crack initiation period. Base and FSW material properties play a major role on fatigue crack propagation simulation. The accuracy of the predicted results increased when considering lower stress amplitudes and by using the FSW material parameters.
AB - The friction stir channelling (FSC)process is a technological innovation based on the friction stir fundamentals. To produce friction stirred channel components, a non-consumable tool, similar to that used for friction stir welding (FSW), is used. Friction stir channelling is a single step manufacturing process in which a continuous channel with a specific path is produced in a monolithic metal component. This work discusses the influence of the channel geometry on the bending strength of friction stirred channel aluminium alloy specimens, as well as their fatigue behaviour. Moreover, fatigue analyses using the finite element method were also carried out, considering the channels' geometrical features in order to assess and compare the fatigue lives. The stress intensity factor for different crack lengths was determined using ABAQUS. The fatigue crack growth curve was established according to the Paris Law, and the crack was only allowed to propagate along the materials interface. It was observed that the critical zones are located in the vicinity of the channel corners and found that the fatigue crack propagation period on FSC specimens is very short compared to the crack initiation period. Base and FSW material properties play a major role on fatigue crack propagation simulation. The accuracy of the predicted results increased when considering lower stress amplitudes and by using the FSW material parameters.
KW - Bending strength
KW - Channel geometry
KW - Fatigue crack growth
KW - Fatigue life
KW - Friction stir channelling
UR - http://www.scopus.com/inward/record.url?scp=85065159396&partnerID=8YFLogxK
U2 - 10.1016/j.engfailanal.2019.04.068
DO - 10.1016/j.engfailanal.2019.04.068
M3 - Conference article
AN - SCOPUS:85065159396
VL - 103
SP - 57
EP - 69
JO - Engineering Failure Analysis
JF - Engineering Failure Analysis
SN - 1350-6307
T2 - 18th International Conference on New Trends in Fatigue and Fracture (NT2F) - Fatigue and Fracture at all Scales
Y2 - 17 July 2018 through 20 July 2018
ER -